Most important, by dressing tastefully, you're adopting a more professional image and may be better positioned for a raise or promotion. Of course, this doesn't mean that you have to dress for work from your grandmother's closet; just beware of showing too much skin at the office.
We can't speak for your job performance, but stick to these wardrobe guidelines, and we bet you'll be on the fast track to success. Or at the very least you won't hear yourself asking, "Would you like fries with that?" anytime soon.